{"post":{"slug":"claude-5-family-pricing-explained-2026","title":"Claude 5 Model Family Pricing Explained for 2026","excerpt":"Fable 5, Opus 5, Sonnet 5, and Haiku 4.5 span a 10x price range per token, before caching, batching, or fast mode change the math. Here's the full breakdown and the levers that actually move your bill.","category":"ai","date":"July 29, 2026","author":"ByteLedger Team","content":"<span class=\"dropcap\">F</span>our models, four price points, and a roughly 10x spread from the cheapest to the most expensive per token: Haiku 4.5 at $1 input / $5 output per million tokens, Sonnet 5 at $3/$15 (discounted to $2/$10 through August 31, 2026), Opus 5 at $5/$25, and Fable 5 at $10/$50. That headline list, though, is only the starting point — prompt caching, batch processing, and Opus 5's fast mode all move the real cost of running these models by a meaningful margin, in directions the sticker price doesn't show.\n\n## What changed in 2026\n\n- **The whole lineup refreshed to the 5 generation, except Haiku.** Fable 5, Opus 5, and Sonnet 5 all launched this year; Haiku 4.5 remains the value tier without a numbered successor yet.\n- **Sonnet 5 shipped with a genuine introductory discount**, not just a marketing framing — $2 input / $10 output per million tokens through August 31, 2026, versus $3/$15 afterward.\n- **Opus 5 held its predecessor's price exactly**, making it one of the rare \"same cost, more capability\" upgrades in the lineup rather than a price increase.\n- **Fable 5 launched above Opus 5 on price**, reflecting its narrower, harder use case rather than being positioned as a blanket upgrade.\n- **Fast mode introduced a new premium tier on top of Opus 5**, at roughly double the standard Opus 5 rate, for teams that need faster output more than they need a cheaper one.\n\n## Full pricing table\n\n| Model | Input (per million tokens) | Output (per million tokens) | Context window | Max output |\n| --- | --- | --- | --- | --- |\n| Claude Haiku 4.5 | $1.00 | $5.00 | 200K | 64K |\n| Claude Sonnet 5 | $3.00 ($2.00 intro through Aug 31, 2026) | $15.00 ($10.00 intro) | 1M | 128K |\n| Claude Opus 5 | $5.00 | $25.00 | 1M | 128K |\n| Claude Opus 5 (fast mode) | $10.00 | $50.00 | 1M | 128K |\n| Claude Fable 5 | $10.00 | $50.00 | 1M | 128K |\n\nFast mode and Fable 5 land at the same headline rate, which is a coincidence worth noting rather than a signal that they're interchangeable — fast mode is a speed upgrade on Opus 5's existing capability, while Fable 5 is a different, more capable model entirely.\n\n## The levers that actually change your bill\n\n1. **Prompt caching.** Reusing a large system prompt, document, or tool definition set across requests means only the first call pays full price; cached reads run at roughly a tenth of the standard input rate. This is the single biggest lever for agentic and RAG-heavy workloads with a stable prefix.\n2. **Batch processing.** Non-latency-sensitive work — bulk classification, offline summarization, large-scale extraction — runs at half the standard per-token price when submitted as a batch instead of individual real-time requests.\n3. **Model routing.** Sending only the requests that need it to Opus 5 or Fable 5, and defaulting everything else to Sonnet 5 or Haiku 4.5, typically has a bigger effect on total spend than any single per-token discount.\n4. **Effort level.** Lower effort settings reduce thinking and tool-call volume, which shows up directly in output token counts on agentic tasks — this is a lever independent of which model you've chosen.\n\n## Common mistakes\n\n- **Comparing models on input price only.** Output tokens dominate the bill on coding, long-form writing, and agentic tool-calling — always model both sides before picking a tier on price.\n- **Missing the Sonnet 5 discount window.** Teams that priced out Sonnet 5 at $3/$15 and passed on it are quoting a higher number than what's actually billed through August 31, 2026.\n- **Ignoring prompt caching until costs are already a problem.** It's one of the easiest changes to make and one of the most commonly skipped, especially in early prototypes that later scale into production traffic.\n- **Assuming fast mode and Fable 5 solve the same problem.** Fast mode buys speed on Opus 5's existing quality; Fable 5 buys more capability at a similar price point. Picking the wrong one wastes the premium.\n\n## FAQ\n\n**Which model is cheapest for high-volume, simple tasks?**\nHaiku 4.5, at $1 input / $5 output per million tokens — by a wide margin the cheapest current-generation option.\n\n**Is the Sonnet 5 introductory price permanent?**\nNo, it runs through August 31, 2026. After that date, standard pricing of $3 input / $15 output per million tokens applies.\n\n**Does prompt caching work the same way across all four models?**\nThe mechanism is the same, but the minimum prompt length required to cache differs by model — Opus 5 and Fable 5 have a lower minimum than Sonnet 5, so shorter prompts are more likely to qualify on the top tiers.\n\n**Is Fable 5 ever cheaper than Opus 5 in practice?**\nRarely on a per-token basis, since its rate is roughly double Opus 5's. It can still be cheaper overall if it solves a hard task in one pass where Opus 5 would need multiple retries.\n\n## Where to go next\n\nFor a deeper look at each tier individually, read our [Claude Sonnet 5 review](/blog/claude-sonnet-5-review-2026) and [Claude Opus 5 review](/blog/claude-opus-5-review-2026). If you're deciding between the two mid-to-top tiers specifically, see [Sonnet 5 vs Opus 5 for real workloads](/blog/claude-sonnet-5-vs-opus-5-2026).","hue":210,"metaTitle":"Claude 5 Family Pricing Explained 2026","metaDescription":"Full pricing breakdown for Claude Fable 5, Opus 5, Sonnet 5, and Haiku 4.5, plus the caching, batching, and fast mode discounts that change it.","keywords":["claude 5 pricing","claude 5 model family pricing","claude api pricing 2026","anthropic pricing 2026","claude sonnet 5 pricing","claude opus 5 pricing","claude fable 5 pricing","claude haiku 4.5 pricing","prompt caching discount"],"tldr":["**Pricing spans roughly 10x across the lineup** — from $1/$5 per million tokens on Haiku 4.5 up to $10/$50 on Fable 5.","**Sonnet 5 has a real discount window** — $2/$10 per million tokens through August 31, 2026, versus $3/$15 standard.","**Prompt caching is the biggest lever most teams underuse** — cached reads cost roughly a tenth of the standard input rate.","**Batch processing halves the price** — at the cost of turnaround time, for anything that doesn't need an immediate answer.","**Skip:** comparing models on input price alone — output tokens usually dominate the bill on coding and agentic workloads."],"readTime":"4 min read","wordCount":892},"related":[{"slug":"claude-sonnet-5-review-2026","title":"Claude Sonnet 5 Review: Capabilities, Pricing, and Fit","excerpt":"Claude Sonnet 5 pairs default adaptive thinking with near-Opus coding quality, priced at $3/$15 per million tokens with a discount through August 2026. 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Measuring generation quality alone hides that entirely.","category":"ai","date":"August 19, 2026","author":"ByteLedger Team","readTime":"5 min read","hue":215}],"newer":{"slug":"best-outdoor-smart-plugs-2026","title":"Best Outdoor Smart Plugs in 2026","excerpt":"An outdoor smart plug needs a real weatherproof rating, not just a cover flap, plus enough amperage for holiday lighting. Here is which models hold up on a porch or in the yard through a full season outside.","category":"tech","date":"July 29, 2026","author":"ByteLedger Team","readTime":"3 min read","hue":239},"older":{"slug":"claude-fable-5-explained-2026","title":"What Claude Fable 5 Is and How It Differs From Opus 5","excerpt":"Claude Fable 5 is Anthropic's most capable widely released model, priced above Opus 5 for the hardest reasoning and longest agentic runs. Here's what makes it different, and who actually needs it.","category":"ai","date":"July 29, 2026","author":"ByteLedger Team","readTime":"4 min read","hue":201}}